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Finding the Fourth Proportional to 18,565.60, 27,850.80 and 9,210.40

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Solution

The fourth proportional to 18,565.60, 27,850.80 and 9,210.40 is: 13,816.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,565.60 : 27,850.80 = 9,210.40 : x
  2. Step 2: Convert to fraction form
    18,565.60/27,850.80 = 9,210.40/x
  3. Step 3: Cross multiply
    18,565.60x = 27,850.80 × 9,210.40
  4. Step 4: Simplify right side
    18,565.60x = 256,517,008.32
  5. Step 5: Solve for x
    x = 256,517,008.32/18,565.60
  6. Step 6: Final answer
    x = 13,816.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.